ps2 - Bi8 PROBLEM SET#2 Name _ TA _ Section # _ DUE BY JAN...

Bi8 PROBLEM SET#2 Name __________________________________ TA _________________________ Section # _______ DUE BY JAN 19, 1pm – turn in at the beginning of class No late homework will be collected. However, it can be turned in early in the box outside Prof. Stathopoulos’ office in Broad 261. Please answer questions directly on this sheet. Enough room has been allotted for appropriate answers. Answers taken directly from the textbook or another source will receive no credit. You MUST rephrase the answer into your own words. Problem 1: Henderson-Hasselbach Equation You have just synthesized a peptide that has shown promise to be a memory-enhancer! Upon testing it on your fellow Caltech students, however, you notice that it only seems to work when you ingest it with large amounts of Coca-cola or lemon juice, and that it does not work when it’s only dissolved in water. A useful table has been included at the end of this problem set. The sequence of the peptide is: Ile-His-Ser-Asn-Lys-Gly-Phe. A) (14 pts) Draw the chemical structure of the peptide (include all carbons and hydrogens) at pH 7.4. B)

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